GammaRAE II ResponderUser Interface IconsIcon IndicationBattery Voltage lowBattery Low alarm triggeredBattery fully chargedLow Gamma alarm triggeredHigh Gamma alarm triggeredGamma Over-Range (reading over 10 R/h)Gamma Overload. Reading more than two timesover-rangeDatalogging active (flashing)Turning GammaRAE II Responder On and OffTurning GammaRAE II Responder OnPress and hold the MODE button for 3 seconds. AsGammaRAE II Responder starts up, the following occur:1. A long beep sounds (if the buzzer is set to On), andunit information and the current firmware version aredisplayed. The LEDs and vibrator undergo a self-test.